Su Ran, a doctor of modern astrophysics, traveled through time and became a poor scholar in Daliang. He relied on scientific knowledge to decipher celestial phenomena, improve ordnance, reform salt administration, and was awarded the title of National Master. He is thwarted by the powerful minister Zhao Wuji, and also faces barbarian invasions and clues about mysterious time travellers. Su Ran joined hands with Lin Yueru and Li Mubai to deal with the court game with wisdom and courage, setting off a storm of change in ancient times and trying to save the crisis in troubled times.
